Aero Precision AR-15 .300 Blackout M4E1 Threaded Complete Upper Receiver, 8″ Barrel, Atlas S-One/M-LOK 7.3″ Handguard- Anodized Black

SKU: APAR700301M1
UPC: 840014601707

Threaded Complete Upper Receiver.

$534.99

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This complete upper includes Aero’s new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. The proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

Complete Upper Includes:

  • M4E1 Threaded Assembled Upper Receiver
  • ATLAS S-ONE Handguard of choice
  • 8″ .300 Blackout CMV Barrel
  • Low Profile Gas Block and Pistol Length Gas Tube
  • Product comes assembled
  • This complete upper does not include BCG or Charging Handle. 
  • The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel.

M4E1 Threaded Upper Receiver Features:

  • New enhanced forging that gives the upper receiver a “billet look”
  • New picatinny profile that blends seamlessly with the Enhanced Series Handguards
  • M4 Feedramps
  • .250 takedown pin holes
  • Laser engraved T-marks
  • Includes port door and forward assist installed

ATLAS S-ONE Handguard Features:

  • Front and rear picatinny rail
  • Eliminated center of top rail for weight reduction
  • Indexing grooves in 12:00 position for positive grip control
  • Quick disconnect sling socket at the 3, 6 and 9 o’clock positions
  • Compatible with low profile gas blocks
  • 1.3” Inside diameter
  • 1.5” Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels

8″ .300 Blackout Barrel Features:

  • Length: 8″
  • Twist: 1 in 7
  • Muzzle: 5/8×24 Threaded
  • Material: 4150 Crome Moly Vanadium
  • Finish: QPQ corrosion resistant finish both inside and out
  • Gas Block: .750″
  • Gas Port: .109″
  • Gas System Length: Pistol
  • Weight: 18oz
  • M4 Barrel Extension
  • HP and MPI Tested
Weight 3.1875 lbs
Manufacturer

Aero Precision

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